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Apache Log4j2 远程代码执行漏洞

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  • TA的每日心情
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    前天 10:32
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    发表于 2021-12-15 10:10:25 | 只看该作者 |只看大图 回帖奖励 |倒序浏览 |阅读模式
    漏洞描述

    Apache Log4j2 是一个基于 Java 的日志记录工具。该工具重写了 Log4j 框架,并且引入了大量丰富的特性。该日志框架被大量用于业务系统开发,用来记录日志信息。

    在大多数情况下,开发者可能会将用户输入导致的错误信息写入日志中。攻击者利用此特性可通过该漏洞构造特殊的数据请求包,最终触发远程代码执行。由于该漏洞影响范围极广,建议广大用户及时排查相关漏洞,经过白帽汇安全研究院分析确认,目前市面有多款流行的系统都受影响。

    该漏洞危害等级:严重

    影响范围

    Apache Log4j 2.x < 2.15.0-rc2

    已知影响组件
    • Apache Struts2
    • Apache Solr
    • Apache Flink
    • Apache Druid
    • flume
    • dubbo
    • logstash
    • VMware Horizon
    • VMware vCenter Server
    • VMware HCX
    • VMware NSX-T Data Center
    • VMware Unified Access Gateway
    • VMware WorkspaceOne Access
    • VMware Identity Manager`
    • VMware vRealize Operations
    • VMware vRealize Operations Cloud Proxy
    • VMware vRealize Log Insight
    • VMware vRealize Automation
    • VMware vRealize Lifecycle Manager
    • VMware Telco Cloud Automation
    • VMware Site Recovery Manager
    • VMware Carbon Black Cloud Workload Appliance
    • VMware Carbon Black EDR Server
    • VMware Tanzu GemFire
    • VMware Tanzu Greenplum
    • VMware Tanzu Operations Manager
    • VMware Tanzu Application Service for VMs
    • VMware Tanzu Kubernetes Grid Integrated Edition
    • VMware Tanzu Observability by Wavefront Nozzle
    • Healthwatch for Tanzu Application Service
    • Spring Cloud Services for VMware Tanzu
    • Spring Cloud Gateway for VMware Tanzu
    • Spring Cloud Gateway for Kubernetes
    • API Portal for VMware Tanzu
    • Single Sign-On for VMware Tanzu Application Service
    • App Metrics
    • VMware vCenter Cloud Gateway
    • VMware Tanzu SQL with MySQL for VMs
    • VMware vRealize Orchestrator
    • VMware Cloud Foundation
    • VMware Workspace ONE Access Connector
    • VMware Horizon DaaS
    • VMware Horizon Cloud Connector
      2 i& U% M3 V( V' {9 \! g4 A
    受影响开源组件
    项目
    仓库地址
    版本

    3 \$ E' u- O4 i( J) G" selasticsearch(org.elasticsearch)https://github.com/elastic/elasticsearch8.0.0-alpha2 等(共 100 个)
    ; P' M1 b6 o1 o) j1 D( d9 \spring-webflux(org.springframework)https://github.com/spring-projects/spring-framework5.2.6.RELEASE 等(共 40 个)8 w4 @: U1 H2 \0 j9 B$ ^
    druid(com.alibaba)https://github.com/alibaba/druid1.2.8 等(共 68 个)
    % |) B5 ?8 ?& e- Xhystrix-rx-netty-metrics-stream(com.netflix.hystrix)https://github.com/Netflix/Hystrix1.5.4 等(共 2 个)6 p3 _% b$ v7 t# S* [: G
    spring-cloud-starter-alibaba-sentinel(com.alibaba.cloud)https://github.com/alibaba/spring-cloud-alibaba2021.1 等(共 14 个)
    5 a. G" p) ~) x3 a" vspring-boot-starter-ahas-sentinel-client(com.alibaba.csp)https://github.com/alibaba/Sentinel1.3.2 等(共 17 个), p* Y$ [( l2 ?, H! `5 z
    redisson(org.redisson)https://github.com/redisson/redisson2.2.24 等(共 3 个)
    * U) f+ Y+ D2 `7 WHikariCP(com.zaxxer)https://github.com/brettwooldridge/HikariCP5.0.0 等(共 27 个)
    ) S+ J. K8 d8 |2 \/ Izipkin-collector-service(io.zipkin)https://github.com/openzipkin/zipkin1.40.2 等(共 27 个)* z5 J* p( h. Q$ ?" x  F1 H
    mybatis-plus(com.baomidou)https://github.com/baomidou/mybatis-plus3.4.3.4 等(共 41 个)
    4 i- {9 D- j6 j+ j2 Wzuul-sample(com.netflix.zuul)https://github.com/Netflix/zuul2.3.0 等(共 10 个)5 x7 p6 P0 v+ N% A' f# e
    watson-data-api-client(com.ibm.watson.data)https://github.com/OpenAPITools/openapi-generator0.1 等(共 1 个)9 q: h# I; S0 j# D  H- C0 x, |
    spring-boot-admin-sample-consul(de.codecentric)https://github.com/codecentric/spring-boot-admin2.5.4 等(共 40 个)' Y+ m# _' Z+ `7 O. N7 e
    jedis(redis.clients)https://github.com/redis/jedisjedis-3.6.2 等(共 36 个)
    8 o2 r2 s6 E+ y$ q3 M3 n0 i# K, pgrpc-benchmarks(io.grpc)https://github.com/grpc/grpc-java1.9.1 等(共 65 个)
    " q- q8 a( E: Z, D% g% p1 Z! @" Fktor-client-json-tests(io.ktor)https://github.com/ktorio/ktor1.6.7 等(共 32 个)
    ! ]' j! }- d  H; D$ l+ `! m9 [' Ugitbucket_2.13(io.github.gitbucket)https://github.com/gitbucket/gitbucket4.32.0 等(共 27 个)
    ! B2 K; `! \: L2 ~. Zfinagle-zipkin_2.12(com.twitter)https://github.com/twitter/finagle7.1.0 等(共 56 个)
    ' G+ @- l* [; v' r6 bresilience4j-vertx(io.github.resilience4j)https://github.com/resilience4j/resilience4j0.9.0 等(共 9 个)
    " S: o3 P- @* w6 m! T' kelasticsearch-sql(org.nlpcn)https://github.com/NLPchina/elasticsearch-sql6.8.13.0 等(共 9 个)6 B/ {: ]' ^1 t& L+ W
    exposed-spring-boot-starter(org.jetbrains.exposed)https://github.com/JetBrains/Exposed0.36.2 等(共 11 个)
    2 X: x: O# r$ g) Bblade-sql2o(com.bladejava)https://github.com/lets-blade/blade1.2.9 等(共 1 个); G/ r2 j5 E; X2 p
    netty-socketio(com.corundumstudio.socketio)https://github.com/mrniko/netty-socketio1.7.19 等(共 8 个)& n. H9 L" f* ^+ Y3 \
    springfox-swagger2(io.springfox)https://github.com/springfox/springfox2.10.5 等(共 6 个)# u8 s5 D% A" X+ B$ X
    main_2.12(org.scala-sbt)https://github.com/sbt/sbt1.6.0-RC1 等(共 88 个)
    - ~9 F3 a" V% K" r2 C* Alettuce-core(io.lettuce)https://github.com/lettuce-io/lettuce-core6.1.5.RELEASE 等(共 42 个)
    7 Y# `! b# Q3 [repository-azure(org.opensearch.plugin)https://github.com/opensearch-project/OpenSearch1.2.0 等(共 3 个)' U9 M" C7 W* m
    reactor-test(io.projectreactor)https://github.com/reactor/reactor-core3.3.4.RELEASE 等(共 3 个); x+ g. O1 M, ?  E3 V2 |
    corda-webserver-impl(net.corda)https://github.com/corda/cordacorda-3.0 等(共 32 个)
    : W& M9 H8 z) b8 S; C6 Y& _. f) iconductor-redis-persistence(com.netflix.conductor)https://github.com/Netflix/conductor3.3.6 等(共 100 个)% @- u) }4 [3 N& j8 T3 s6 v
    armeria(com.linecorp.armeria)https://github.com/line/armeria0.26.1.Final 等(共 2 个)$ d- Y; N% V) X- l* j
    breeze-parent_2.13(org.scalanlp)https://github.com/scalanlp/breeze2.0.1-RC1 等(共 5 个)! g% I3 {4 e7 P0 f' t2 E  U" f
    micrometer-core(io.micrometer)https://github.com/micrometer-metrics/micrometer1.8.1 等(共 98 个)' D9 v2 r2 ~1 m- R4 a. V
    alink_connector_jdbc_sqlite_flink-1.9_2.11(com.alibaba.alink)https://github.com/alibaba/Alink1.5.1 等(共 3 个)% Q5 X6 b! D+ W/ `1 h, s4 J
    initializr-actuator(io.spring.initializr)https://github.com/spring-io/initializr0.9.0 等(共 6 个)( k; \' ~" d. s, c7 v2 X, G
    telegrambots-spring-boot-starter(org.telegram)https://github.com/rubenlagus/TelegramBots4.9.1 等(共 17 个)
    ' O+ O1 W# K, S5 p1 a3 L9 \8 T1 mspring-data-elasticsearch(org.springframework.data)https://github.com/spring-projects/spring-data-elasticsearch4.3.0 等(共 86 个)
    7 M- g7 i6 j1 L; B% F9 j3 ]feast-common(dev.feast)https://github.com/feast-dev/feast0.9.2 等(共 26 个)9 S8 h8 }) t& A1 y' x
    javamelody-core(net.bull.javamelody)https://github.com/javamelody/javamelody1.88.0 等(共 13 个)
    $ }& g: K" C1 s( ~$ I7 g2 H  Banalytics-zoo-bigdl_0.13.0-spark_3.0.0(com.intel.analytics.zoo)https://github.com/intel-analytics/analytics-zoo0.11.0-RC1 等(共 4 个)' b/ `, p1 Q1 W
    scio-tensorflow_2.13(com.spotify)https://github.com/spotify/scio0.9.6 等(共 97 个)
    : d. A: N. P9 q+ v, m3 A, J% Ggrpc-client-spring-boot-autoconfigure(net.devh)https://github.com/yidongnan/grpc-spring-boot-starter2.9.0.RELEASE 等(共 16 个)$ h2 i0 z8 _2 T/ H" m
    inject-server_2.12(com.twitter)https://github.com/twitter/finatra21.9.0 等(共 56 个)
    % d8 Q( @) O1 vclient-java-examples(io.kubernetes)https://github.com/kubernetes-client/java8.0.2 等(共 1 个)
    & t/ y: }1 Z  x/ Areactivesocket-tck-drivers(io.reactivesocket)https://github.com/rsocket/rsocket-java0.6.0 等(共 1 个). ?7 e( _$ K7 \( J& ?( _+ b
    jest-droid(io.searchbox)https://github.com/searchbox-io/Jest6.3.1 等(共 8 个)! Y1 O6 b9 t  X( F
    graphql-dgs-example-java-webflux(com.netflix.graphql.dgs)https://github.com/Netflix/dgs-framework4.9.7 等(共 36 个)
    , ~; P& C3 k5 e+ aquill-jdbc-monix_2.11(io.getquill)https://github.com/getquill/quill3.9.0 等(共 62 个)
    ! B6 e, _9 \( n3 Udoobie-quill_2.12(org.tpolecat)https://github.com/tpolecat/doobie1.0.0-RC1 等(共 61 个)7 b" v1 ?5 @$ W
    http4k(org.http4k)https://github.com/http4k/http4k4.3.4.1 等(共 3 个)7 _* H. y" t2 F9 M7 C# `+ u2 \, V% }* Y
    elasticsearch-hadoop(org.elasticsearch)https://github.com/elastic/elasticsearch-hadoop8.0.0-beta1 等(共 100 个)
    % Y& U1 x) u& m3 w7 {8 e. csbt-shading(io.get-coursier)https://github.com/coursier/coursier1.0.0-RC8 等(共 1 个)
    ' W9 f9 A6 m8 T; e. A# hspark-cassandra-connector-unshaded_2.10(com.datastax.spark)https://github.com/datastax/spark-cassandra-connector2.0.9 等(共 54 个)8 H0 H( d9 j/ T% a& q
    webdrivermanager(io.github.bonigarcia)https://github.com/bonigarcia/webdrivermanager4.0.0 等(共 15 个)
    / {" w3 n3 D: E* b' v, Hcommon-auth-v3(com.tencent.bk.devops.ci.common)https://github.com/Tencent/bk-ci1.2.0-rc.7-RELEASE 等(共 3 个)
    8 L& o3 n% ~/ K! W4 t$ Sreactor-netty(io.projectreactor.netty)https://github.com/reactor/reactor-netty1.0.9 等(共 75 个)) \2 Q% l3 u1 A* N# D( B5 R' c
    evcache-client-sample(com.netflix.evcache)https://github.com/Netflix/EVCache5.18.9 等(共 63 个)
    1 W1 z4 T, M2 a% v2 uxtdb-test(com.xtdb)https://github.com/xtdb/xtdb1.20.0 等(共 9 个)- Y( ~# K: h. w. y, O
    transport-netty4(com.strapdata.elasticsearch.plugin)https://github.com/strapdata/elassandra6.2.3.31 等(共 14 个)
    9 Q) _! I8 u$ e1 f  Rsbt-metals(org.scalameta)https://github.com/scalameta/metals0.9.9 等(共 17 个)
    ) x* S; u, c3 [elastic4s-embedded_2.12(com.sksamuel.elastic4s)https://github.com/sksamuel/elastic4s6.7.8 等(共 100 个)
    ! D( Z9 P: ^3 `% E/ ]  Bgenie-agent(com.netflix.genie)https://github.com/Netflix/genie4.0.4 等(共 100 个)
    5 b+ j7 V4 h2 _& Ispring-kafka(org.springframework.kafka)https://github.com/spring-projects/spring-kafka2.7.9 等(共 79 个)
    7 Q$ g3 C! \) m: s, w2 fdb-async-common_2.13(com.dripower)https://github.com/mauricio/postgresql-async0.3.109 等(共 19 个)
    4 r$ o' M2 j2 l8 G% \7 uselenide(com.codeborne)https://github.com/selenide/selenide5.25.0-selenium-4.0.0-rc-2 等(共 18 个); r6 v  G3 _( E
    cloudfoundry-identity-server(org.cloudfoundry.identity)https://github.com/cloudfoundry/uaa4.30.0 等(共 1 个)2 n" T/ t; s) v6 }
    servo-atlas(com.netflix.servo)https://github.com/Netflix/servo0.13.2 等(共 20 个)
    1 R, s& S) \+ p6 w2 C/ Erxnetty-spectator-tcp(io.reactivex)https://github.com/ReactiveX/RxNetty0.5.3-rc.4 等(共 12 个)
    3 _- u, y2 M$ V' y; ], c3 ?/ q( Nmleap-tensorflow_2.10(ml.combust.mleap)https://github.com/combust/mleap0.9.6 等(共 25 个)
    $ o1 }* ?7 F6 W3 |4 _4 j' vspark-testing-base_2.12(com.holdenkarau)https://github.com/holdenk/spark-testing-base2.4.4_1.1.1 等(共 100 个)2 f9 y$ m0 u7 k7 a4 R6 ~7 _4 x! p( U
    graphql-kotlin-spring-client(com.expediagroup)https://github.com/ExpediaGroup/graphql-kotlin5.0.0-alpha.0 等(共 20 个)% [1 [& k* s* x+ E2 S3 H
    graphql-spring-boot-test-autoconfigure(com.graphql-java-kickstart)https://github.com/graphql-java-kickstart/graphql-spring-boot8.1.1 等(共 33 个)- E6 I; |5 t/ g, L
    discord4j-rest(com.discord4j)https://github.com/Discord4J/Discord4J3.2.1 等(共 15 个), w8 U* l2 r7 p8 e- j* d1 L
    twitter-server-logback-classic_2.13(com.twitter)https://github.com/twitter/twitter-server21.9.0 等(共 54 个)9 W  Q& x& X$ u2 D7 }! [; q
    synthea(org.mitre.synthea)https://github.com/synthetichealth/synthea2.7.0 等(共 2 个)+ Z! Y. ~+ K$ k& T& K' Q  O8 d. R# |" b
    spring-integration-redis(org.springframework.integration)https://github.com/spring-projects/spring-integration5.5.6 等(共 30 个)
    * i' {) o- _" ^! ~" s: Rcyclops-reactor-integration(com.oath.cyclops)https://github.com/aol/cyclops10.4.0 等(共 1 个)
    # W$ t+ @3 E* b% ]# `7 ^akka-stream-alpakka-geode_2.12(com.lightbend.akka)https://github.com/akka/alpakka1.0-M1 等(共 13 个)
    ; t- U: x7 S: s$ J! J- Bmantis-client(io.mantisrx)https://github.com/Netflix/mantis1.3.9 等(共 83 个)- X8 w1 j9 N0 F' S% t0 H3 Q7 g; N
    mybatis-generator-plugin(com.itfsw)https://github.com/itfsw/mybatis-generator-plugin1.2.9 等(共 31 个)
    + x" v' G# p7 ~, |3 u4 Z, Fktorm-support-sqlserver(org.ktorm)https://github.com/kotlin-orm/ktorm3.3.0 等(共 11 个)& r: h0 G$ @( |0 e' h* ]
    gatk(org.broadinstitute)https://github.com/broadinstitute/gatk4.beta.2 等(共 39 个)
    4 {1 L& a* z3 `4 Dazure-messaging-servicebus(com.azure)https://github.com/Azure/azure-sdk-for-java7.5.1 等(共 100 个)& v* `) i9 f' k
    mica-metrics(net.dreamlu)https://github.com/lets-mica/mica2.5.7 等(共 7 个)6 @( }6 w, S3 G" l
    shiro-redis(org.crazycake)https://github.com/alexxiyang/shiro-redis3.3.1 等(共 2 个)0 r- L9 x$ a0 Z3 P$ p" P* f
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    0 L6 @: p- W3 B7 T& rjdonframework(org.jdon)https://github.com/banq/jdonframework6.6.8 等(共 1 个)
    4 m, E6 |+ Y2 }& W7 O! h2 V6 Qweid-java-sdk(com.webank)https://github.com/WeBankBlockchain/WeIdentity1.8.1 等(共 3 个)  q# d, w& d2 R" h6 S
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    / ~- G( T3 l) y, [& hmicro-boot(com.oath.microservices)https://github.com/aol/micro-server1.2.6 等(共 38 个)
    2 [* H9 r; t; c( x9 J, B* h& S! Qsparkling-water-package_2.11(ai.h2o)https://github.com/h2oai/sparkling-water2.4.10 等(共 36 个)
    & |; ?1 J6 l! Escalatest_2.13(au.com.dius.pact.provider)https://github.com/pact-foundation/pact-jvm4.2.4 等(共 5 个)" j0 w6 g1 [" z0 M
    mssql-jdbc(com.microsoft.sqlserver)https://github.com/microsoft/mssql-jdbc8.3.0.jre11-preview 等(共 100 个): c% M& K8 v9 p) v+ @2 t
    elide-spring-boot-starter(com.yahoo.elide)https://github.com/yahoo/elide6.0.3 等(共 45 个), r& A* _- I. ]) c8 k) G/ I  Y8 B
    kafka-connect-elastic5(com.datamountaineer)https://github.com/lensesio/stream-reactor1.2.0 等(共 5 个)
    3 q7 |( B2 N7 S) P1 n+ m7 R5 s0 Nkvision-server-spring-boot-jvm(io.kvision)https://github.com/rjaros/kvision5.4.3 等(共 9 个)
    . a1 G/ A$ Y% N+ i" c0 ?r2dbc-postgresql(org.postgresql)https://github.com/pgjdbc/r2dbc-postgresql0.9.0.RC1 等(共 8 个). Z) h$ N; B+ @5 k  D! Z# R. n
    play-slick-evolutions_2.13(com.typesafe.play)https://github.com/playframework/play-slick5.0.0-RC3 等(共 29 个)5 a7 C- X+ L1 c9 q6 K( @
    sbt-bloop-core(ch.epfl.scala)https://github.com/scalacenter/bloop1.4.8-43-c2d941d9 等(共 29 个)4 g# |; w% H+ g# Y( g
    jcseg-elasticsearch(org.lionsoul)https://github.com/lionsoul2014/jcseg2.6.2 等(共 7 个)

    更多受影响组件查询,请点击以下链接查询:https://log4j2.huoxian.cn/

    漏洞排查

    代码排查:查看 pom.xml 是否引入 org.apache.logging.log4j、org.apache.logging.log4j2

    Linux:

    sudo find / -name "*log4j-*.jar"

    Windows:

    *log4j*.jar

    攻击排查

    日志排查:

    攻击者在利用前通常采用dnslog方式进行扫描、探测,对于常见利用方式可通过应用系统报错日志中的

    "javax.naming.CommunicationException"

    "javax.naming.NamingException: problem generating object using object factory"

    "Error looking up JNDI resource"关键字进行排查。

    流量排查:

    攻击者的数据包中可能存在:“${jndi:rmi”、“${jndi:ldap”字样,可根据此类关键字进行排查。

    漏洞复现

    Vulfocus 靶场环境

    目前 Vulfocus 已经集成 Log4j2 环境,可通过以下链接启动环境测试:

    http://vulfocus.fofa.so/#/dashboard?image_id=3b8f15eb-7bd9-49b2-a69e-541f89c4216c

    也可通过 docker pull vulfocus/log4j2-rce-2021-12-09:latest 拉取本地环境运行,本地启动命令:docker run -d -P vulfocus/log4j2-rce-2021-12-09:latest

    修复建议

    1、禁止使用 log4j 服务器外连,升级 idk 11.0.1 8u191 7u201 6u211 或更高版本。

    2、升级至 log4j-2.15.0-rc2:

         下载地址:https://github.com/apache/logging-log4j2/releases/tag/log4j-2.15.0-rc2

    3、紧急缓解措施:

    (1) 修改 jvm 参数 -Dlog4j2.formatMsgNoLookups=true

    (2) 修改配置 log4j2.formatMsgNoLookups=True

    (3) 将系统环境变量 FORMAT_MESSAGES_PATTERN_DISABLE_LOOKUPS 设置 为 true

    参考

    [1] https://github.com/apache/logging-log4j2/releases/tag/log4j-2.15.0-rc1

    [2] [LOG4J2-3201] Limit the protocols jNDI can use and restrict LDAP. - ASF JIRA (apache.org)

    [3] ASF Git Repos - logging-log4j2.git/blob - log4j-core/src/test/java/org/apache/logging/log4j/core/lookup/JndiRestrictedLookupTest.java

    [4] https://mp.weixin.qq.com/s/wC7mrK1Y4DYz9_yW4fLzbw

    [5] https://help.aliyun.com/noticelist/articleid/1060971232.html

    [6] https://mp.weixin.qq.com/s/C4zeXHKHDqPeRuLytO7Fzw


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